British Standards Institution

Sector: Sustainability

Overview: Under the direction of the Standards Policy and Strategy Committee, is responsible for the UK input to IEC/TC 37 ‘Surge Arresters’, IEC/SC 37B ‘Components for low-voltage surge protection’, CLC/TC 37A ‘Low voltage surge protective devices’, CLC/SR 37 ‘Surge arresters’, and CLC/SR 37B ‘Specific components for surge arresters and surge protective devices’

Committee standards activity

In Progress (15)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PNW 37-491 ED1:	Surge Arc Suppressor - Part 1: Surge Arc Suppressor (SAS) devices to Protect Power Line Insulation of systems > 1kV a.c. Categories: Information management \| Standardization. General rules \| Engineering \| Electrical engineering \| Power transmission and distribution networks \| Substations. Surge arresters Proposal begins : 2023-06-21	Proposal
PD IEC/TS 61643-06 ED1	Low-voltage surge protective devices. Part 06: Requirements and test methods for SPD specific disconnectors Categories: Unclassified documents Public comment begins :	Public comment
BS IEC 61643-321	Components for low-voltage surge protection. - Part 321: Performance requirements and test circuits for silicon PN-junction voltage limiters Categories: Diodes Public comment begins : 2018-11-08	Public comment
BS EN IEC 61643-41:2023/AA	Low-voltage surge protective devices. - Part 41: Surge protective devices connected to DC low-voltage power systems - Requirements and test methods Categories: Substations. Surge arresters Public comment begins : 2023-11-03	Public comment
BS EN IEC 61643-41	BS EN 61643-41 Ed1 Low-voltage surge protective devices. Part 41: Surge protective devices connected to DC low voltage power systems – Requirements and test methods Categories: Switchgear and controlgear. Low voltage Comment resolution begins : 2024-12-09	Comment resolution
BS EN IEC 61643-11:2023/AA	Low-voltage surge protective devices. - Part 11: Surge protective devices connected to AC low-voltage power systems - Requirements and test methods Categories: Substations. Surge arresters Public comment begins : 2023-11-03	Public comment
BS EN IEC 61643-11	Low-voltage surge protective devices. - Part 11: Surge protective devices connected to AC low-voltage power systems - Requirements and test methods Categories: Power transmission and distribution networks. General \| Substations. Surge arresters Public comment begins : 2019-07-17	Public comment
BS EN IEC 61643-01:2023/AA	Low-voltage surge protective devices. - Part 01: General Requirements and test methods Categories: Substations. Surge arresters Approval begins :	Approval
BS EN IEC 61643-01	Low-voltage surge protective devices. - Part 01: General Requirements and test methods Categories: Substations. Surge arresters Approval begins : 2024-09-03	Approval
BS EN 61643-322 Ed 1	Components for low-voltage surge protection – Part 322: Selection and application principles for silicon PN-junction voltage limiters. Part 322: Selection and application principles for silicon PN-junction voltage limiters Categories: Telecommunication systems. Other Comment resolution begins : 2023-08-23	Comment resolution

Published (24)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD IEC/TR 61643-03:2024	Low-voltage surge protective devices. SPD testing guide Categories: Insulating materials. General \| Substations. Surge arresters Published standard begins : 2024-07-09	Published standard
PD IEC/PAS 60099-7:2004	Surge arresters. Glossary of terms and definitions from IEC publications 60099-1, 60099-4, 60099-6, 61643-1, 61643-12, 61643-21, 61643-311, 61643-321, 61643-331 and 61643-341 Categories: Fuses. Overcurrent protection devices \| Substations. Surge arresters \| Electrical engineering Published standard begins : 2004-07-09	Published standard
PD IEC TR 60099-10:2024	Surge arresters. Rationale for tests specified by IEC 60099-4:2014 Categories: Fuses. Overcurrent protection devices \| Substations. Surge arresters Published standard begins : 2024-08-30	Published standard
PD CLC/TS 61643-22:2016	Low-voltage surge protective devices. Surge protective devices connected to telecommunications and signalling networks. Selection and application principles Categories: Power transmission and distribution networks. General \| Substations. Surge arresters Published standard begins : 2016-04-29	Published standard
PD CLC/TS 51643-32:2020	Low-voltage surge protective devices. Surge protective devices connected to the DC side of photovoltaic installations. Selection and application principles Categories: Solar energy engineering \| Fuses. Overcurrent protection devices Published standard begins : 2020-08-03	Published standard
PD CLC/TR 50656:2016	SPD application in conjunction with Class II equipment Categories: Fuses. Overcurrent protection devices Published standard begins : 2016-03-11	Published standard
DD CLC/TS 61643-12:2009	Low-voltage surge protective devices. Surge protective devices connected to low-voltage power distribution systems. Selection and application principles Categories: Substations. Surge arresters Published standard begins : 2010-07-06	Published standard
DD CLC/TS 50544:2010	Low voltage d.c. surge protective device for traction systems. Selection and application rules for surge arresters Categories: Fuses. Overcurrent protection devices \| Electric traction equipment Published standard begins : 2010-04-13	Published standard
DD CLC/TS 50539-22:2010	Low-voltage surge protective devices. Surge protective devices for specific application including d.c. Selection and application principles. Wind turbine applications Categories: Fuses. Overcurrent protection devices Published standard begins : 2010-06-03	Published standard
BS IEC 60099-6:2019	Surge arresters. Surge arresters containing both series and parallel gapped structures. System voltage of 52 kV and less Categories: Substations. Surge arresters Published standard begins : 2023-05-31	Published standard

Withdrawn (25)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD CLC/TS 50539-12:2013	Low-voltage surge protective devices. Surge protective devices for specific application including d.c. Selection and application principles. SPDs connected to photovoltaic installations Categories: Fuses. Overcurrent protection devices Withdrawn begins : 2020-08-03	Withdrawn
DD CLC/TS 61643-22:2006	Low-voltage surge protective devices. Surge protective devices connected to telecommunications and signalling networks. Selection and application principles Categories: Substations. Surge arresters \| Fibre optic interconnecting devices \| Fuses. Overcurrent protection devices Withdrawn begins : 2016-04-29	Withdrawn
DD CLC/TS 61643-12:2006	Low-voltage surge protective devices. Surge protective devices connected to low-voltage power systems. Selection and application principles Categories: Substations. Surge arresters Withdrawn begins : 2010-07-06	Withdrawn
DD CLC/TS 50539-12:2010	Low-voltage surge protective devices. Surge protective devices for specific application including d.c. Selection and application principles. SPDs connected to photovoltaic installations Categories: Fuses. Overcurrent protection devices Withdrawn begins : 2014-07-07	Withdrawn
BS IEC 61643-32:2017	Low-voltage surge protective devices. Surge protective devices connected to the d.c. side of photovoltaic installations. Selection and application principles Categories: Power transmission and distribution networks. General \| Substations. Surge arresters Withdrawn begins : 2019-07-17	Withdrawn
BS EN IEC 61643-331:2018	Components for low-voltage surge protective devices. Performance requirements and test methods for metal oxide varistors (MOV) Categories: Fuses. Overcurrent protection devices \| Resistors. General \| Resistors. Variable and potentiometers. Withdrawn begins : 2020-05-13	Withdrawn
BS EN 61643-341:2001	Low voltage surge protective devices. Specification for thyristor surge suppressors (TSS) Categories: Fuses. Overcurrent protection devices \| Diodes \| Thyristors Withdrawn begins : 2020-07-10	Withdrawn
BS EN 61643-331:2003	Low voltage surge protective devices. Specification for metal oxide varistors (MOV) Categories: Fuses. Overcurrent protection devices \| Resistors. Variable and potentiometers. Withdrawn begins : 2018-04-12	Withdrawn
BS EN 61643-311:2001	Low voltage surge protective devices. Specification for gas discharge tubes (GDT) Categories: Fuses. Overcurrent protection devices \| Electronic tubes \| Switching and signalling systems \| Telecommunication systems. Other Withdrawn begins : 2016-05-05	Withdrawn
BS EN 61643-31:2019	Low-voltage surge protective devices. Requirements and test methods for SPDs for photovoltaic installations Categories: Fuses. Overcurrent protection devices Withdrawn begins : 2022-09-29	Withdrawn

Standards Development

PEL/37 - Surge Arresters

Committee standards activity